Designed as an alternative option to the Accuracy International AICS pattern magazine, the Accurate-Mag 300 WSM magazines are available in 7 or 3 round capacities. The removal of the binder plate at the front of the magazine aids in loading longer rounds of up to 2.950" COAL, a common occurrence in similar cartridges such as 6.5 SAUM and 7 SAUM or others in the Winchester Short Magnum family. Due to this increased space inside the magazine the Accurate-Mag 300 WSM magazine is also capable of handling some 6.5 PRC loads, despite their generally longer overall lengths.